Fumio Ishikawa

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Defective portion detecting device with a horizontal synchronized s...
- Patent number 5,959,293
- Issue date Sep 28, 1999
- Sony Corporation
- Fumio Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Integrated oscillation circuit used for frequency conversion circuit
- Patent number 5,841,326
- Issue date Nov 24, 1998
- Sony Corporation
- Shinichi Kitazono
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency conversion circuit with UHF/VHF common PLL buffer
- Patent number 5,525,937
- Issue date Jun 11, 1996
- Sony Corporation
- Shinchi Kitazono
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital phase comparator for use in a phase lock loop
- Patent number 5,124,594
- Issue date Jun 23, 1992
- Sony Corporation
- Hiroshi Numata
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Audio-video modulator system on IC chip
- Patent number 5,079,525
- Issue date Jan 7, 1992
- Sony Corporation
- Nobuyuki Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Two phase trapezoidal signal generating circuit
- Patent number 4,645,946
- Issue date Feb 24, 1987
- Sony Corporation
- Fumio Ishikawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
High speed buffer circuit particularly suited for use in sample and...
- Patent number 4,612,464
- Issue date Sep 16, 1986
- Sony Corporation
- Fumio Ishikawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
High frequency wide band resonant circuit
- Patent number 4,160,964
- Issue date Jul 10, 1979
- Sony Corporation
- Fumio Ishikawa
- H03 - BASIC ELECTRONIC CIRCUITRY

Fumio Ishikawa

Person

Patents Grantslast 30 patents

Defective portion detecting device with a horizontal synchronized s...

Integrated oscillation circuit used for frequency conversion circuit

Frequency conversion circuit with UHF/VHF common PLL buffer

Digital phase comparator for use in a phase lock loop

Audio-video modulator system on IC chip

Two phase trapezoidal signal generating circuit

High speed buffer circuit particularly suited for use in sample and...

High frequency wide band resonant circuit